Safety elevatoe



(No Model.)

J. T. PINE.

SAFETY BLBVATOR. No. 287,959. Patented Nov. 6. 1888.

UNrrnn STATES PATENT OFFICE.

Jenn r., PINE, or nsw vonk, n. r.

SAFETVY- ELEVATO R.

`SPIECIFICSAIION"forming'part of Letters Patent No. 287,959, dated November 6,i 1883.

Application filed September 10, IBEB. (No model.)

To @Z whom i6 may concer-n.;

Be it known that I, JOHN T. PINE, of the city and State of New York, have invented an l Improvement in lSafety-Elevators, of

thefollowing is a specification.

Elevators for buildings have been made with safety dogs or catches beneath the car, which dogs are thrown out bythe action of a rope passing over a pulley at the top and down beneath a pulley at the bottom, the ends of the rope being connected to the lever of the dogs upon the car. In connection with this device governor-balls have been employed, so that if time the car is gaining speed as it descends,

and hence when the dog-s are brought into aetion they are sometimes broken by the concussion due to the sudden stoppage ofthe car, or else the car itself or some other portions of the elevator are i ruptured at the risk of inl 3o jury to theocenpants ofthe elevator, and

sometimes involving loss of life.

My invention is for rendering the elevator much more safe by adding to the automatic devices heretofore used a mechanism that is under the control of the persons in the car, whereby the dogs can beinstantly locked to hold the car in position, without waiting `for the automatic device to be operative, which might not come into operation with sufficient rapidity to insure safety.

i In the drawings Ihave represented by an elevation, Figure l, the general relation of the respective parts, andin Fig. 2 a plan showing the arrangement of levers and links acting on the dogs to stop the car.

Upon reference to the aforesaid Patent No. 228,107, the general construction and arrange; ment of an apparatus will be found to which my improvement can be applied; but I do not limit my device to its use vwith the said apparatus, but intend to use the same with any elevating apparatus in which the stops or which pawls on the car are brought into actionby a rope passing over pulleys at top and bottom of the hoistway.

The stationary slides A A are placed vertically in the hoistway, and upon them are the rack-teeth I). The car or cage G is provided with jaws or sliders upon the vertical slides Aand there are suspending-slings d, and a cross-head, E, to which the hoist-rope Fis attached. The said hoist rope passes over -pulleys Gr G at the top, and is operated by suit able power.

Upon the car C, preferably at the bottom, there are the pawls or bolts H, that are adapted to engage with the rack-teeth b, and there are levers and links k, by which these are operated simultaneously, and a bent lever, Z, one end of which is connected to the lever k by a link, k', andthe other endV is connected to the rope or cable m, that passes at the top over the grooved wheel n, and at thebottom beneath the grooved wheel o.

There are in use several forms of safety appliances for arresting or retarding the movement of the car in its descent. Some are frictional and others positive stops. Any of these known appliances may be used for arresting the downward movement of the car7 and I remark that the devices shown and described are only introduced to illustrate a mechanism that may be used, and I do not limit myself to the same. As thecar is drawn up,the safetyrope on is moved with it, and it runs freely over the grooved wheels n o and rotates them.

.cla-mp or clamps, t, that detain the rope and cause the lever l to operate the safety-pawls. This governor may be used with my invention or not, as there are other appliances that have been employed to bring into action the safetypawls when the hoisting-rope breaks or the car falls.

My improvement especially relates to the 4If the movement of the rope mis stopped as IOO combination, with the safety catches or bolts, if the attendant is not suiciently prompt in and the rope or cable m and its wheels n o, of a clamp that is operated by handy in the car, and serves to detain such rope m and cause the safety vcatches or pawls to be operative instantly in arresting the downward movement of the car, thus enabling the attendant in the car to :instantly apply the safety locking device independently of the automatic devicesy operated by the accelerated movement of the car, so that the risk of injury from the breaking of the hoisting-rope is greatly lessened.

The rope, chain, cord, or wire rope o hangs vertically in the hoistway. At the top of such hoistway it passes over one or two guide-pulleys, and its end is connected with the clamp t by a lever, f. Thereis aweight,rw, attached near the upper end of the chain o, to counterbalance the weight of said chain and prevent it from lifting the lever f and clamping the ropem, except when drawn upon by hand.l If a person in the car C seizes this chain or rope o, it is pulled upon as the ca'r descends7 and the clamp t is immediately swung against the rope fm, stopping its movement and acting through the levers and parts connected with the descending car upon the pawlsQ or dogs, causing them instantly to engage with the rack and stop the ear in its further movement. rlhe car can thus be stopped by a careful attendant and locked without acquiring any accelerated velocity. At the same the automatic device is not interfered with, and will come into action stoppingthe car. v

zI claim as my invention- V Y 1. The combination, with safety-catches, the rope m, its wheels, and the levers connecting the catches and rope, of a clamp applied to the rope m, and avertical chain or rope passing 4o at the upper end over a pulley and connected with the clamp, substantially'as set forth.

'2. The combination, with an elevator car or platform, of safety-catches, a rope to operate the same, wheels for such rope to pass over, a clamp to detain the rope, and a vertical chain or rope to operate the clamp, substantially as set forth.A

3. rlhe combination, with the elevator car or platform andthe safety-catches upon the same, of a rope or cable to operate such catches, wheels for said rope, a governor actuated by one of the wheels, a clamp acted `upon by the governor, and a rope or chain passing verti= cally of the elevator-shaft and connected at the upper end to the clamp, substantially as set forth, whereby the safety-catches can be brought into action either by the governor or by a personin the car, substantially as set forth.

Signed by me this 6th day of September, A. D. 1883.

JOHN fr.' PINE.

Witnesses: I

GEO. T. PINCKNEY, WILLIAM G. Morin 

